CVE-2025-21764

High

Description

In the Linux kernel, the following vulnerability has been resolved: ndisc: use RCU protection in ndisc_alloc_skb() ndisc_alloc_skb() can be called without RTNL or RCU being held. Add RCU protection to avoid possible UAF.

SeverityHigh
CVSS7.8
Exploit probability—
ProductLinux Kernel
PublishedFeb 27, 2025
First seenFeb 27, 2025

How to fix

Update
  • linux linux_kernel5.4.291, 5.10.235, 5.15.179, 6.1.129, 6.6.79, 6.12.16, 6.13.4 or later

Affected products

ProductAffected versionsFixed in
linux linux_kernel3.9 ≤ v < 5.4.291, 5.5 ≤ v < 5.10.235, 5.11 ≤ v < 5.15.179, 5.16 ≤ v < 6.1.129, 6.2 ≤ v < 6.6.79, 6.7 ≤ v < 6.12.16, 6.13 ≤ v < 6.13.4, 6.145.4.291, 5.10.235, 5.15.179, 6.1.129, 6.6.79, 6.12.16, 6.13.4

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CVE-2025-21764 · Linux Kernel · Dark Radar